package com.luoyanni;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.function.Consumer;

public class HashSetDemo {
    public static void main(String[] args) {
        ArrayList<String> list = new ArrayList<String>();
        list.add("张琪");
        list.add("张琪");
        list.add("张琪");
        list.add("张琪");
        System.out.println(list);
        System.out.println(new HashSet<String>(list));


        //1.创建HashSet对象
        HashSet<String> hashSet = new HashSet<String>();
        //2.保存数据
        hashSet.add("张琪");
        hashSet.add("李思");
        hashSet.add("王王");
        hashSet.add("赵赵");
        System.out.println(hashSet);
        //取数据
        Iterator<String> iterator = hashSet.iterator();
        while (iterator.hasNext()) {
            String next = iterator.next();
            System.out.println(next);
        }
        //取数据(增强for循环)
        for (String name : hashSet) {
            System.out.println("name="+name);
        }

        int[] arr = {1,2,3,4,5,6,7,8,9,10};
        for (int i :  arr){
            System.out.println(i);
        }
        //5.取数据(Lambda)
        hashSet.forEach(new Consumer<String>() {
            @Override
            public void accept(String s) {
                System.out.println(s);
            }
        });

        hashSet.forEach(s-> System.out.println(s));
        hashSet.forEach(System.out::println);
        Student student = new Student("张三",28);
        System.out.println(student );


    }
}
